๐ August 7, 2026
v1.5.3
GPT-5.4 Mini 16K Default
Registration Flow Fixed
Email Verification Improved
FAQ + LLM Hub Updated
GPT-5.4 Mini 16K Default, Plan Context Updates & Smoother New Account Registration
Chatsistant Platform v1.5.3 is live. This update introduces GPT-5.4 Mini 16K as the default configuration for newly created chatbots, refreshes model and context guidance across the platform, and fixes an account-registration routing issue that could create confusion after a new member signed up.
New members can now register, receive their temporary email verification code immediately, land directly on the Finish Account Creation screen, verify their email, and continue through the account flow normally.
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๐ค GPT-5.4 Mini 16K Is the New Default
- New default: Newly created Chatsistant chatbots now start with GPT-5.4 Mini 16K.
- Balanced live-chat performance: The new default provides a strong mix of speed, response quality, RAG support, multilingual capability, and credit efficiency.
- Builders still have control: Users can change models and context configurations according to the access available through their current plan.
- Existing bots preserved: Existing chatbots are not automatically changed simply because the default for newly created bots has changed.
Default does not mean permanently locked: GPT-5.4 Mini 16K is the starting configuration for new chatbots. Available model choices and maximum context size are determined by the member's current trial or subscription plan.
โ New Account Registration Flow Fixed
- Registration routing corrected: A backend issue affecting the next step after account registration has been fixed.
- Verification screen restored: New members are now routed directly to the Finish Account Creation screen.
- Email verification working normally: The temporary verification code is sent immediately to the email address used during registration.
- Smoother onboarding: Members can enter the code, verify their email, and continue account creation without the previous redirect confusion.
What happened: New registrations were being created and verification emails were being sent successfully, but an updated backend metadata condition interfered with the expected routing step. The issue has now been corrected.
๐ง Trial & Plan Context Access Clarified
- 30-Day Free Trial: Every new member can test the full Chatsistant LLM suite with up to 128K context. No credit card is required to begin the trial.
- Launch Free: Supports up to 16K LLM context after the user subscribes to the $0/month Launch plan.
- Essential: The $10/month plan supports up to 64K LLM context.
- Higher Plans: Larger plan-specific context limits are available where supported.
Trial ยท Up to 128K
Launch ยท Up to 16K
Essential ยท Up to 64K
Higher Plans ยท Larger Limits
๐ Source Knowledge vs. Active Context
- Source capacity: Determines how much searchable knowledge can be stored for a chatbot.
- LLM context: Determines how much information the selected model can actively process in a single request.
- RAG retrieval: Chatsistant retrieves the most relevant pieces of stored knowledge for each user question.
- Upgrade benefit: Larger context plans allow more retrieved knowledge, instructions, and conversation information to be considered together when needed.
Important distinction: A chatbot can store a larger searchable knowledge base without sending that entire library into the LLM on every message. Chatsistant uses retrieval and chunk curation to send the most relevant context for the current request.
๐ FAQ, LLM Hub & Model Guidance Updated
Public model guidance has also been refreshed so the FAQ, LLM Hub, plan guidance, and internal knowledge sources consistently reflect the new GPT-5.4 Mini 16K default and current trial and plan context structure.
โ Model Guidance Updates
- Default wording updated: Older GPT-o3 Mini and GPT-5 Mini default references were replaced where they referred specifically to the platform default.
- GPT-5.4 Mini catalog entries preserved: Generic model-family listings remain separate from the GPT-5.4 Mini 16K configured default.
- Trial guidance clarified: Full-suite testing and the 128K trial context limit are now explained more clearly.
๐ณ Plan Guidance Updates
- Launch clarified: Launch is the $0/month Free Forever subscription with up to 16K context.
- Essential clarified: Essential is $10/month with up to 64K context.
- Plan scaling clarified: Higher plans provide access to larger plan-specific context limits and broader capabilities where supported.
๐ ๏ธ Why This Update Matters
This release improves two important parts of the Chatsistant experience: what happens after a chatbot is created, and what happens when a new member creates an account. New chatbots now begin with a modern GPT-5.4 Mini 16K configuration, while new members once again move cleanly from registration to email verification without unnecessary confusion.
Simple Summary
Chatsistant v1.5.3 makes GPT-5.4 Mini 16K the default for newly created chatbots, clarifies trial and plan context limits, refreshes public model guidance, and fixes the new-member registration flow so email verification and account creation work smoothly from start to finish.
Versioning note: Chatsistant Platform v1.5.3 builds on v1.5.2 with a new GPT-5.4 Mini 16K default configuration, clearer plan/context guidance, refreshed FAQ and LLM Hub information, and a backend registration-flow correction for new member email verification.
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